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Publication numberUS1835048 A
Publication typeGrant
Publication dateDec 8, 1931
Filing dateDec 12, 1927
Priority dateDec 12, 1927
Publication numberUS 1835048 A, US 1835048A, US-A-1835048, US1835048 A, US1835048A
InventorsRay Hottel
Original AssigneeChrysler Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1835048 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

R. HOTTEL Dec.`8, 1931.-


Fled Dec.



This invention relates to seats and more particularly to an adjustable seat back for use on an automobile.

It is desirable that the operators seat back may be supported at various distances from the front edge of the seat to facilitate his reaching the various levers in front of the seat. With this object in view, the invention contemplates the provision of a horizontally movable cushion supported on the main seat back and adjustable by means of a handle within convenient reach of the operator.

Another object of the invention is to provide an adjusting means which permits slight vertical movement of the seat back'cushion, when it is moved rearwardly, to remain in contact with the curved outline of the seat cushion at its rear edge, thus preventing an opening between the seat and seat back cushion at any of the adjusted positions.

A further object of the invention is to proy vide an extensible covering between the main seat back and the movable cushion.

Other objects and advantages will more fully appear from the following description taken in connection with the accompanying drawings in which:

Fig. l is'a vertical sectional view of the seat back showing an adaptation of my invention, some parts, including a seat cushion, being shown in elevation.

F ig. 2 is a front elevation of the seat back shown in Fig. 1.

Referring to the drawings, a fixed seat vback structure is 'shown as at 12, rigidly supported between the side walls 14 of an automobile body. The rea-r of the seat back is closed by upholstery 16. The front of the seat is open and the operating mechanism is shown secured to the front surface thereof, projecting rearwardly within the fixed seat back structure. Brackets 18 secured to the front surface of the seat back are adapted to receive pivoted bell cranks 20 each having an upwardly extending arm 22 and a rearwardly extending arm 24. Two bell cranks have been shown an upper and a lower one. A link 26 pivotally connects the outer ends of thearms 24 and brackets 28, secured to the Serial No. 239,280.

seat back cushion 30, are pivotally secured to the cuter ends of the arms 22.

Carried by the link 26 is a screwthreaded block 32 adapted to be pivoted thereon a'nd to receive t-he screwthreaded end of a rod 34 extending vertically into the upper portion 36 of the seat back structure. The upper end of the rod 34 has a squared end 38, to receive a handle 40, and a groove 42 receives a` bifurcated member'44 to axially position the rod 34.

The upper edge of thel seat back is provided with a rigid flange 46 for closing the space between the seat back 12 and the cushion 30 when the cushion 3() is in partially extended position. A flexible member 4S, such as upholstery material, has its one edge secured to the underside of the flange 46 and its opposite edge is secured to the edge of the cushion 30. When the cushion is i-n its rearward position the member 48 is folded be.- tween the cushion and flange 46 but may be dra-wn out by the cushion when the latter is in its forward position.

It will be understood that as the rod 34 is turned by the handle 40, the block 32 and link 26 move vertically, pivoting the bell cranks 2O which move the cushion horizontally. Due to the outer ends of the arms 22 moving in an arc, the cushion moves vertically at its extreme positions, but as the arms 22 are vertical when the cushion is in its central position, there is comparatively no vertical movement at that point. The seat cushion 50 has its upper rear corner curved as at 52; the radius of which is substantially equal to the length of the arm 22, and is located, with respect to the cushion 30, in a position such that the lower edge of cushion 30 is in engagement with the curved surface 52 throughout its curved path of movement, vertically and horizontally.

In Fig. 2, I have shown bell cranks and connecting links at the two sides of the cushion, operated by a single rod and handle and the bell cranks are mounted on rods 54 extending horizontally from one side to the other.

It will be understood that while I have described and illustrated one particular embodiment of my invention, various changesv including size, vshape and arrangement of parts, maybe made Without departing from the spirit of my invention and it is not my intention-to limit its scope other than by the terms .of the appended claims.

VVhatlI Claim is: Y l l. The combination with a vehicle ,seat and a fixedV back, of a movable cushion located forward of said ixed back, Vbell-@ranks p'ivo'tedl on said Vfixed back each hz'rvin'g ak horizont-ally and a vertically extended armi, a link Connecting the horizontal arms of said bell cranks at fixed points, means .for pivot- Y ally connecting the vertical arms on said cushion at'iixed points, said means supportin g said movable-cushion, anda vertical rod positionedon said fixed back havingioneend in screwthreaded engagement with said link and its opposite endprovidedvvith a handle for rotating said rod to move said; link vertically. Y v A 2. The combinationwith a vehicle seatand a ixed back, of a movable Acushion located forward` of `said iixed back7 afrifgidflange secured to said lixed backA extending over the edge of said Ciishiom-and an extensible member having one edge secured tofsaid flange vand itsother edge secured to said cushion for Closing the space. betweenthe said fixed 'back and said cushion when the r-latteris extended forward from said i'ixed back.

V3. The Combination withavehicle seat and i a; ixed back, of a movable cushiony located forward of said fixed back, means for moving' said cushion through 'a curved path, and .a seat cushion 'having its `rearnqaperV corner curved to correspond with the `line of ftravel of the lower end of said movable aousliion,

whereby `the lower edge of vthe'seat baok is substantially in engagement wit-litlielower edge of said cushion .throughout:theentire movement of. said Cushion.

RAYl HoTTnii.v 'Y

20. if. e 1,835,048

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2550831 *Jul 1, 1949May 1, 1951Lingenfelter Robert EAdjustable means for changing the contour of seat back rests
US2853121 *Jan 24, 1957Sep 23, 1958Rockwell Standard CoAdjustable back rest construction
US3203732 *Jan 28, 1963Aug 31, 1965Hoffman William AChair having adjustable back and seat
US4097087 *May 13, 1977Jun 27, 1978Garavaglia Marco FChair with adjustable back support cushion
US4313637 *Nov 13, 1979Feb 2, 1982Uop Inc.Seat having a movable lumbar support
US9326608Jun 3, 2014May 3, 2016Goldilocks Associates, LLCMulti-configurable seating device
US20110183729 *Jan 27, 2011Jul 28, 2011Akira SatouMobile electronic device
EP0011396A1 *Oct 22, 1979May 28, 1980Uop Inc.Seat having movable lumbar support
U.S. Classification297/383
International ClassificationB60N2/22
Cooperative ClassificationB60N2/22
European ClassificationB60N2/22